虚拟环境中的Jupyter笔记本没有看到虚拟env包

Question

我正在尝试在虚拟环境中使用 Jupyter Notebook。 我创建了一个新的 virtualenv virtualenv ker12 + 激活 + 安装特定版本的 keras 或任何其他库。

也正如Using a virtualenv in an IPython notebook 中提到的那样：

pip install ipykernel

和

python -m ipykernel install --user --name=my-virtualenv-name

当我运行笔记本并写作时 ! which jupyter输出正确

/Users/myname/virtualenv/ker12/bin/python

但是当我尝试导入库时，例如import keras 时出现错误。

ImportError: 没有名为 keras 的模块

但另一方面，当我写pip freeze | grep Keras 输出是：

Keras==1.2.0

更新 1：

此问题与 Keras 无关，它发生在任何其他库（例如 pandas）中

如果我打印os.path，输出如下：

从“命令行 python”来看，os.path 看起来是正确的

更新 2：

如果我从终端打印sys.path 和jupyter，输出也不同：

从终端

/Users/myname/virtualenv/ker12/lib/python27.zip /Users/myname/virtualenv/ker12/lib/python2.7 /Users/myname/virtualenv/ker12/lib/python2.7/plat-darwin /Users/myname/virtualenv/ker12/lib/python2.7/plat-mac /Users/myname/virtualenv/ker12/lib/python2.7/plat-mac/lib-scriptpackages /Users/myname/virtualenv/ker12/lib/python2.7/lib-tk /Users/myname/virtualenv/ker12/lib/python2.7/lib-old /Users/myname/virtualenv/ker12/lib/python2.7/lib-dynload /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7 /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework /Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages /Users/myname/virtualenv/ker12/lib/python2.7/site-packages

来自 JUPYTER

/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python27.zip /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7 /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework /Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload /usr/local/lib/python2.7/site-packages /usr/local/lib/python2.7/site-packages/IPython/extensions /Users/myname/.ipython `

Answer 1

解决方法是使用以下命令打开 jupyter notebook：

~/virtualenv/my_venv_name/bin/jupyter-notebook

Answer 2

您不应该安装 ipykernel - 相反，您应该在虚拟环境中进行完整的 Jupyter 安装 (pip install jupyter)。此外，请确保不要使用 --system-site-packages 选项创建虚拟环境。

另见this answer。